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      <a id="mpulse"></a>
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      <a id="IndexMpulse" class="indexterm"></a>
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        <h2>
          <span class="refentrytitle">mpulse</span>
        </h2>
        <p>mpulse — 
      Generates a set of impulses.
    </p>
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      <div class="refsect1">
        <a id="idp126703984"></a>
        <h2>Description</h2>
        <p>
      Generates a set of impulses of amplitude <span class="emphasis"><em>kamp</em></span> separated by <span class="emphasis"><em>kintvl</em></span> seconds (or samples if <span class="emphasis"><em>kintvl</em></span> is negative).  The first impulse is generated after a delay of <span class="emphasis"><em>ioffset</em></span> seconds.
    </p>
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      <div class="refsect1">
        <a id="idp126769840"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">ares <span class="command"><strong>mpulse</strong></span> kamp, kintvl [, ioffset]</pre>
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      <div class="refsect1">
        <a id="idp126772032"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>ioffset</em></span> (optional, default=0) -- the delay before the first impulse. If it is negative, the value is taken as the number of samples, otherwise it is in seconds. Default is zero.
    </p>
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      <div class="refsect1">
        <a id="idp126774032"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>kamp</em></span> -- amplitude of the impulses generated
    </p>
        <p>
      <span class="emphasis"><em>kintvl</em></span> -- Interval of time in seconds (or samples if <span class="emphasis"><em>kintvl</em></span> is negative) to the next pulse.
    </p>
        <p>
      After the initial delay, an impulse of <span class="emphasis"><em>kamp</em></span> amplitude is generated as a single sample.  Immediately after generating the impulse, the time of the next one is determined from the value of <span class="emphasis"><em>kintvl</em></span> at that precise moment. This means that any changes in <span class="emphasis"><em>kintvl</em></span> between impulses are discarded. If <span class="emphasis"><em>kintvl</em></span> is zero, there is an infinite wait to the next impulse. If <span class="emphasis"><em>kintvl</em></span> is negative, the interval is counted in number of samples rather than seconds.

    </p>
        <p>
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      <div class="refsect1">
        <a id="idp126780688"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the mpulse opcode. It uses the file <a class="ulink" href="examples/mpulse.csd" target="_top"><em class="citetitle">mpulse.csd</em></a>.

      </p>
        <div class="example">
          <a id="idp126782544"></a>
          <p class="title">
            <strong>Example 531. Example of the mpulse opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out   Audio in    No messages</span>
-odac           -iadc     -d     <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o mpulse.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1

gkfreq <span class="opc">init</span> 0.1

<span class="oblock">instr</span> 1
  kamp <span class="op">=</span> 10000

  a1 <span class="opc">mpulse</span> kamp, gkfreq
  <span class="opc">out</span> a1
<span class="oblock">endin</span>

<span class="oblock">instr</span> 2
<span class="comment">; Assign the value of p4 to gkfreq</span>
gkfreq <span class="opc">init</span> p4
<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>

<span class="comment">; Play Instrument #1 for one second.</span>
<span class="stamnt">i</span> 1 0 11
<span class="stamnt">i</span> 2 2 1    0.05
<span class="stamnt">i</span> 2 4 1    0.01
<span class="stamnt">i</span> 2 6 1    0.005
<span class="comment">; only last notes are audible</span>
<span class="stamnt">i</span> 2 8 1    0.003
<span class="stamnt">i</span> 2 10 1    0.002


<span class="stamnt">e</span>


<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp126786832"></a>
        <h2>See Also</h2>
        <p>
      Another example of how to use mpulse can be found here: <a class="link" href="mode.html" title="mode"><em class="citetitle">mode</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp126789024"></a>
        <h2>Credits</h2>
        <p>Written by John ffitch.</p>
        <p>New in version 4.08</p>
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